Add method for adding custom indexes.

1 files changed, 7 insertions, 0 deletions

diff --git a/sphinx/application.py b/sphinx/application.py
index cd9baf9c..7d4e3cac 100644
--- a/sphinx/application.py
+++ b/sphinx/application.py
@@ -405,6 +405,13 @@ class Sphinx(object):
             raise ExtensionError('domain %s not yet registered' % domain)
         self.domains[domain].roles[name] = role
 
+    # XXX needs documentation
+    def add_index_to_domain(self, domain, name, localname, shortname, func):
+        if domain not in self.domains:
+            raise ExtensionError('domain %s not yet registered' % domain)
+        self.domains[domain].indices.append((name, longname, shortname))
+        setattr(self.domains[domain], '_get_%s_index' % name, func)
+
     def add_object_type(self, directivename, rolename, indextemplate='',
                         parse_node=None, ref_nodeclass=None, objname=''):
         StandardDomain.object_types[directivename] = \